Box-type substation convenient to maintain

Abstract

The utility model relates to the technical field of transformer substations, and provides a convenient-to-maintain box-type transformer substation comprising a housing, one side of the housing is rotatably connected with a box door, one side of the box door facing the housing is provided with an accommodating box, the accommodating box is internally provided with an accommodating space, the accommodating space is internally rotatably connected with a rotating shaft, and the rotating shaft is rotatably connected with the housing. A connecting rod assembly used for driving the rotating shaft to rotate is arranged at the top of the containing box, the other end of the connecting rod assembly is rotationally connected with the shell, a locking assembly used for preventing the rotating shaft from rotating is arranged in the containing space, and by means of the technical scheme, workers can conveniently overhaul the box-type substation.

Description

Technical Field

[0001] This utility model relates to the field of substation technology, specifically to a prefabricated substation that is easy to maintain. Background Technology

[0002] Prefabricated substations are an important component of power systems, primarily used for the transmission, distribution, and conversion of electrical energy. In urban areas, prefabricated substations are widely used in power supply systems, converting high-voltage transmission lines into low-voltage electricity suitable for urban use through transformers, providing a stable power supply for residents, industry, and commerce. In industrial production, substations are used in power distribution systems to distribute electrical energy according to the required voltage and current, meeting the power needs of different production equipment.

[0003] Currently, in order to better meet the space requirements, ventilation and heat dissipation, and fire safety of prefabricated substations, they are usually placed outdoors to improve their reliability and safety.

[0004] To prevent malfunctions caused by equipment aging, loosening, or other factors, staff typically need to conduct regular maintenance on prefabricated substations. When staff inspect the distribution cabinets, they need to open the cabinet doors. Since prefabricated substations are located outdoors, the cabinet doors may be blown by the wind, thus hindering the staff's inspection and making maintenance inconvenient. Utility Model Content

[0005] This utility model proposes a prefabricated substation that is easy to maintain, making it convenient for staff to maintain the prefabricated substation.

[0006] The technical solution of this utility model is as follows: A prefabricated substation that is easy to maintain includes a housing, a door rotatably connected to one side of the housing, a receiving box provided on the side of the door facing the housing, a receiving space provided inside the receiving box, a rotating shaft rotatably connected inside the receiving space, a connecting rod assembly for driving the rotating shaft to rotate provided on the top of the receiving box, and the other end of the connecting rod assembly rotatably connected to the housing, and a locking assembly for preventing the rotating shaft from rotating inside the receiving space.

[0007] Furthermore, one end of the rotating shaft passes through the top of the housing and extends out of the housing. The linkage assembly includes a first linkage and a second linkage. One end of the first linkage is rotatably connected to the housing, and the other end of the first linkage is rotatably connected to one end of the second linkage. The other end of the second linkage is connected to the end of the rotating shaft away from the housing.

[0008] Furthermore, the bottom of the accommodating space is provided with a locking groove, and the locking assembly includes a ratchet, a pawl, and a return torsion spring. The ratchet is disposed in the locking groove and is fixedly connected to the rotating shaft. The pawl is rotatably connected to the inner wall of the locking groove through the rotating shaft and engages with the ratchet. The return torsion spring is sleeved on the rotating shaft, with one end connected to the inner wall of the locking groove and the other end connected to the pawl.

[0009] Furthermore, a first sliding groove is provided at the bottom of the locking groove on the side away from the ratchet. A first sliding block is slidably connected to the inner wall of the first sliding groove. A second sliding groove is provided at the top of the first sliding block. A second sliding block is slidably connected in the second sliding groove. A third connecting rod is rotatably connected to the top of the second sliding block, and the other end of the third connecting rod is rotatably connected to the pawl. A screw is threadedly connected to the bottom of the first sliding block, and one end of the screw passes through the side of the housing and extends to the outside of the housing.

[0010] Furthermore, a gear is fixedly connected to the outer surface of the rotating shaft, a rack is provided in the accommodating space and meshes with the gear, sliders are provided on both sides of the rack and are slidably connected to the inner wall of the accommodating space, and an elastic element is provided on the side of the accommodating space near the shell, and one end of the elastic element abuts against the slider.

[0011] Furthermore, guide grooves are provided on both sides of the accommodating space, and guide blocks are provided on both sides of the slider, with the guide blocks slidingly connected to the inner wall of the guide groove.

[0012] Furthermore, the accommodating space is provided with a mounting groove on the side near the shell, and an anti-deviation post is provided in the mounting groove. One end of the elastic element abuts against the mounting groove, and the elastic element is sleeved on the anti-deviation post.

[0013] The working principle and beneficial effects of this utility model are as follows:

[0014] This utility model, through the design of a housing box, a rotating shaft, a connecting rod assembly, and a locking assembly, allows the connecting rod mechanism to rotate the rotating shaft inside the housing box when the door is opened for maintenance. When the door is opened to a certain angle, the worker can lock the rotating shaft using the locking assembly, thereby locking the connecting rod mechanism and fixing the door. This prevents the door from being blown by the wind in outdoor conditions, thus avoiding the problem of the door hindering maintenance work and facilitating the maintenance of the prefabricated substation. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0017] Figure 2This is a partial structural cross-sectional view of this embodiment.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 for Figure 3 Enlarged view of point C in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of Embodiment 2;

[0021] Figure 6 for Figure 4 Enlarged diagram of point B in the middle.

[0022] In the diagram: 1. Housing; 101. Door; 102. Storage box; 103. Storage space; 104. Rotating shaft; 2. First connecting rod; 201. Second connecting rod; 3. Locking groove; 301. Ratchet; 302. Pawl; 304. Return torsion spring; 305. First sliding groove; 306. First sliding block; 307. Second sliding groove; 308. Second sliding block; 309. Third connecting rod; 310. Screw; 311. Rotating shaft; 4. Gear; 401. Slider; 402. Elastic element; 403. Rack; 404. Guide groove; 405. Guide block; 406. Mounting groove; 407. Anti-deviation column. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] Example 1:

[0025] refer to Figure 1-4 A prefabricated substation for easy maintenance includes a housing 1. A door 101 is rotatably connected to one side of the housing 1. The door 101 is rotatably connected to the housing 1 via a hinge. A receiving box 102 is provided on the side of the door 101 facing the housing 1. A receiving space 103 is provided inside the receiving box 102. A rotating shaft 104 is rotatably connected inside the receiving space 103. A connecting rod assembly for driving the rotating shaft 104 to rotate is provided on the top of the receiving box 102. The other end of the connecting rod assembly is rotatably connected to the housing 1. A locking assembly for preventing the rotating shaft 104 from rotating is provided inside the receiving space 103.

[0026] With the configured enclosure 102, rotating shaft 104, linkage assembly, and locking assembly, when the staff opens the enclosure door 101 for maintenance, the linkage mechanism will drive the rotating shaft 104 inside the enclosure 102 to rotate. When the door is opened to a certain angle, the staff can lock the rotating shaft 104 by rotating the locking assembly, thereby locking the linkage mechanism and fixing the enclosure door 101. This prevents the enclosure door 101 from being blown by the wind in outdoor conditions, thus avoiding the problem of the staff being unable to carry out maintenance, and making it easier for the staff to carry out maintenance on the prefabricated substation.

[0027] Specifically, one end of the rotating shaft 104 passes through the top of the housing 102 and extends out of the housing 102. The linkage assembly includes a first linkage 2 and a second linkage 201. One end of the first linkage 2 is rotatably connected to the housing 1 (it should be noted that when the door 101 is closed, the distance from the rotation point of the first linkage 2 to the inner wall of the housing 1 to the door 101 is greater than the distance from the center of the rotating shaft 104 to the door 101, and the length of the first linkage 2 is greater than the length of the second linkage 201). The other end of the first linkage 2 is rotatably connected to one end of the second linkage 201. The other end of 1 is connected to the end of the rotating shaft 104 away from the housing 102. The cross-section of the end of the rotating shaft 104 away from the housing 102 is square. The end of the second connecting rod 201 connected to the rotating shaft 104 is provided with a rotating groove. The cross-section of the rotating groove is square. The rotating shaft 104 with the square structure can contact the inner wall of the rotating groove with the square structure, so that the second connecting rod 201 can rotate the rotating shaft 104. At the same time, this connection method can facilitate the disassembly of the rotating shaft 104 and the second connecting rod 201 by the staff, and facilitate the maintenance of the connecting rod assembly.

[0028] The linkage assembly enables the smooth opening and closing of the cabinet door 101. The staff only needs to gently push or pull the cabinet door 101, and the linkage assembly will drive the cabinet door 101 to perform the corresponding rotational movement, making it easier and more convenient to open and close the cabinet door 101.

[0029] In this embodiment, the bottom of the accommodating space 103 is provided with a locking groove 3. The locking assembly includes a ratchet 301, a pawl 302, and a return torsion spring 304. The ratchet 301 is disposed in the locking groove 3 and is fixedly connected to the rotating shaft 104. The pawl 302 is rotatably connected to the inner wall of the locking groove 3 through the rotating shaft 311 and engages with the ratchet 301. The return torsion spring 304 is sleeved on the rotating shaft 104, with one end connected to the inner wall of the locking groove 3 and the other end connected to the pawl 302.

[0030] The bottom of the locking groove 3 on the side away from the ratchet 301 is provided with a first sliding groove 305. The inner wall of the first sliding groove 305 is slidably connected to a first sliding block 306. The top of the first sliding block 306 is provided with a second sliding groove 307. The second sliding groove 307 is slidably connected to a second sliding block 308. The top of the second sliding block 308 is rotatably connected to a third connecting rod 309, and the other end of the third connecting rod 309 is rotatably connected to a pawl 302. The bottom of the first sliding block 306 is threadedly connected to a screw 310, and one end of the screw 310 passes through the side of the container 102 and extends to the outside of the container 102. The screw extends out of the container 102 and is threadedly connected to the container.

[0031] Working principle: When the operator opens the door 101, the linkage assembly drives the rotating shaft 104 to rotate clockwise, which in turn drives the ratchet 301 to rotate. As the ratchet 301 rotates clockwise, its teeth will cause the rotating shaft 311 to rotate through the pawl 302, thereby causing the reset torsion spring 304 to twist. When the pawl 302 rotates around the rotating shaft 311, the pawl 302 will drive the second sliding block 308 to move away from the ratchet 301 in the second sliding groove 307 through the third linkage 309.

[0032] When the ratchet 301 moves to the next tooth, the pawl 302 will mesh with the next tooth of the ratchet 301 under the action of the reset torsion spring 304, restricting the shaft 104 to rotate only clockwise, so that the staff can only open the box door 101, to prevent the box door 101 from being affected by wind or external interference, and to ensure that the staff can carry out the substation maintenance work smoothly.

[0033] After the substation maintenance is completed, the staff needs to rotate the screw 310 first. The screw 310 will drive the first sliding block 306 to move away from the ratchet 301 in the second sliding groove 307. When the first sliding block 306 moves, since the second sliding block 308 is connected to the pawl 302 through the third connecting rod 309, the second sliding block 308 will drive the pawl 302 to rotate around the rotating shaft 311 through the third connecting rod 309. Thus, the pawl 302 will disengage from the ratchet 301. Since the threaded connection has self-locking properties, it prevents the pawl 302 from jamming the ratchet 301 again under the action of the reset torsion spring 304, thus making it convenient for the staff to close the substation box door.

[0034] Example 2;

[0035] Based on Example 1, and referring to Figure 5-6To prevent the door from not closing due to human negligence, a gear 4 is provided on the outer surface of the rotating shaft 104 and is fixedly connected to the rotating shaft 104. A rack 403 is provided in the accommodating space 103 and meshes with the gear 4. A slider 401 is provided on both sides of the rack 403 and is slidably connected to the inner wall of the accommodating space 103. An elastic element 402 is provided on the side of the accommodating space 103 near the housing 1, and one end of the elastic element 402 abuts against the slider 401. The elastic element 402 is a cylindrical compression spring. The cylindrical compression spring has efficient energy storage and release characteristics and can quickly release energy when needed to help the door 101 close quickly and stably.

[0036] When the staff opens the enclosure door 101, the linkage mechanism drives the rotating shaft 104 to rotate. Since the gear 4 is fixedly connected to the rotating shaft 104, the gear 4 will rotate together with the rotating shaft 104. At the same time, the gear 4 will drive the rack 403 to rotate in the direction of compressing the elastic element 402. By setting the slider 401, the contact area between the rack 403 and the elastic element 402 can be increased, thereby improving the stability of the rack 403's movement. When the staff finishes inspecting the substation, they release the enclosure door 101, and the elastic element 402 will return to its original deformation. This will drive the gear 4 to rotate through the rack 403, and then drive the linkage assembly to close the enclosure door 101 through the gear 4, thus preventing the door from being left open due to human negligence and improving safety.

[0037] To prevent the slider 401 from shifting or becoming misaligned during movement, guide grooves 404 are provided on both sides of the accommodating space 103, and guide blocks 405 are provided on both sides of the slider 401. The guide blocks 405 are slidably connected to the inner wall of the guide grooves 404. Through the provided guide blocks 405 and guide grooves 404, the slider 401 can be prevented from shifting or becoming misaligned during movement, thereby improving the stability of the slider 401's movement. When the direction of movement of the slider 401 is accurate, it can ensure that the elastic element 402 is subjected to uniform force, avoid the phenomenon of the elastic element 402 shifting, and thus improve the service life of the elastic element 402.

[0038] To further facilitate the installation of the elastic element 402 by the staff, an installation groove 406 is provided on the side of the accommodating space 103 near the housing 1. An anti-deviation post 407 is provided in the installation groove 406 (it should be noted that the anti-deviation post 407 can retract). One end of the elastic element 402 abuts against the installation groove 406, and the elastic element 402 is sleeved on the anti-deviation post 407. The installation groove 406 provides an installation position for the elastic element 402, which is convenient for the staff to install. The anti-deviation post 407 can ensure that the elastic element 402 will not shift or misalign under long-term use, thereby improving the service life of the elastic element 402.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A box-type substation convenient for maintenance, comprising a shell (1), a box door (101) is rotatably connected to one side of the shell (1), characterized in that, The side of the box door (101) facing the shell (1) is provided with a containing box (102), the containing box (102) is provided with a containing space (103) therein, the containing space (103) is rotatably connected with a rotating shaft (104), the top of the containing box (102) is provided with a connecting rod assembly for driving the rotating shaft (104) to rotate, and the other end of the connecting rod assembly is rotatably connected with the shell (1), and the containing space (103) is provided with a locking assembly for preventing the rotating shaft (104) from rotating. One end of the rotating shaft (104) penetrates through the top of the containing box (102) and extends out of the containing box (102), the connecting rod assembly comprises a first connecting rod (2) and a second connecting rod (201), one end of the first connecting rod (2) is rotatably connected with the shell (1), the other end of the first connecting rod (2) is rotatably connected with one end of the second connecting rod (201), and the other end of the second connecting rod (201) is connected with the end of the rotating shaft (104) away from the containing box (102). The bottom of the containing space (103) is provided with a locking groove (3), the locking assembly comprises a ratchet wheel (301), a pawl (302) and a reset torsional spring (304), the ratchet wheel (301) is arranged in the locking groove (3) and is fixedly connected with the rotating shaft (104), the pawl (302) is rotatably connected with the inner wall of the locking groove (3) through a rotating shaft (311) and is engaged with the ratchet wheel (301), and the reset torsional spring (304) is sleeved on the rotating shaft (104) and one end thereof is connected with the inner wall of the locking groove (3) and the other end thereof is connected with the pawl (302).

2. The walk-to box-type substation of claim 1, wherein: The bottom of the side of the locking groove (3) away from the ratchet wheel (301) is provided with a first sliding groove (305), the inner wall of the first sliding groove (305) is slidably connected with a first sliding block (306), the top of the first sliding block (306) is provided with a second sliding groove (307), the second sliding groove (307) is slidably connected with a second sliding block (308), the top of the second sliding block (308) is rotatably connected with a third connecting rod (309), and the other end of the third connecting rod (309) is rotatably connected with the pawl (302), the bottom of the first sliding block (306) is threadedly connected with a screw rod (310), and one end of the screw rod (310) penetrates through the side of the containing box (102) and extends to the outside of the containing box (102).

3. The walk-to box-type substation of claim 1, wherein: The outer surface of the rotating shaft (104) is fixedly connected with a gear (4), the containing space (103) is provided with a rack (403), and the rack (403) is engaged with the gear (4), the rack (403) is provided with a sliding block (401) on both sides, and the sliding block (401) is slidably connected with the inner wall of the containing space (103), the side of the containing space (103) close to the shell (1) is provided with an elastic member (402), and one end of the elastic member (402) abuts against the sliding block (401).

4. The walk-to box-type substation of claim 3, wherein: Both sides of the containing space (103) are provided with guide grooves (404), both sides of the sliding block (401) are provided with guide blocks (405), and the guide blocks (405) are slidably connected with the inner walls of the guide grooves (404).

5. The walk-to box-type substation of claim 3, wherein: The accommodation space (103) is provided with a mounting groove (406) near one side of the shell (1), the mounting groove (406) is provided with an anti-deviation column (407), one end of the elastic member (402) abuts against the mounting groove (406), and the elastic member (402) is sleeved on the anti-deviation column (407).

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